The website wrote: "In Cantonese, 'seven', or 柒, is pronounced tsat, and is also slang for 'penis'.

"The word isn’t particularly offensive. Instead, it is often used to describe a hilarious person or thing, or mock someone gently. "Let’s say a friend slipped in public, or got a goofy haircut: you can say to him in Cantonese 'You are so seven' without hurting his feelings too much.

"Or, you can take the literal meaning. That’s why 'This is penis' or 'Penis, is here' or 'Exactly is penis' were not great choices for Apple’s Hong Kong marketing push."